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| Study on Atmospheric Pressure Leaching Process of Cobalt-nickel Matte |
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Received:March 19, 2012
Revised:March 19, 2012
Accepted:March 20, 2012
Published Online:July 25, 2012
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| DOI：10.3969/j.issn.1007-7545.2012.08.004 |
| KeyWord:cobalt-nickel matte; leaching; sulfuric acid; nickel; cobalt; ferrum; selectivity leaching |
| Author | Institution |
| ZHOU Yong-mao |
中南大学冶金科学与工程学院 |
| HU Bao-lei |
中南大学冶金科学与工程学院 |
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| Abstract: |
| The cobalt-nickel matte, a reduction product from nickel converter slag by vulcanization smelting, was atmospherically pressure leached at the sulfuric acid system. The effects of sulfuric acid concentration, ratio of liquid to solid (L/S), leaching time and temperature on leaching rate of valuable metals were investigated. The results show that L/S and sulfuric acid concentration have great influence on the leaching rate of cobalt, nickel and ferrum. The ferrum leaching rate reaches 69%, nickel and cobalt leaching rate could be controlled below 1% and 5% respectively under the conditions including sulfuric acid concentration of 1.6 mol/L, L/S of 5, leaching time of 2.5 h, and leaching temperature of 85 ℃, A good selectivity leaching effect was obtained. |
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